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Source Naturals L-Tyrosine, 500 Mg 100 Tablets, 10-pack

Home / L-Tyrosine, 500 Mg 100 Tablets, 10-pack (100004)

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Delivery time Shipment after 01/03

Article number: 100004
Delivery time: Shipment after 01/03


L-Tyrosine is an amino acid which can be converted in the brain and adrenal glands into dopamine, norepinephrine and epinephrine (adrenaline), hormones that are depleted as a result of stress, overwork and certain types of medication. It is therefore an effective stress reduction medication.

Improve energy levels naturally

If norepinephrine supplies are replenished, mental energy levels are improved and feelings of contentment and well-being often occur. It is thus an effective brain supplement. Conversion from L-Tyrosine to norepinephrine may be enhanced if the co-factor vitamins B6 and C are taken in conjunction with L-Tyrosine.

Blood pressure warning

The cells in the adrenal medulla are known to synthesize and secrete norepinephrine and epinephrine, both of which cause smooth muscle (arterial) contraction, thus affecting blood pressure. If you have suffer from low or high blood pressure, caution should be exercised when supplementing with L-Tyrosine and you should consult a doctor.

Depression, cancer, migraine and other conditions

L-Tyrosine is sometimes used as pain medication and/or depression medication. In the case of depression or pain, higher doses than suggested (1 or 2 tablets a day) can be required.

Those suffering from (various forms of) cancer such as melanoma are advised not to take L-Tyrosine, because this amino acid stimulates tumour growth. Migraine sufferers are advised not to take L-Tyrosine as it forms tyramine, a substance which may trigger migraines. Those suffering from the metabolic disorder phenylketonuria are advised not to take L-Tyrosine. Because L-Tyrosine can cause insomnia, it is recommended that an L-Tyrosine supplement be taken several hours before bedtime.

For all others, L-Tyrosine can enhance mental energy levels and lead to feelings of well-being.

If you would like to try L-Tyrosine, place your order online for the number of tablets you require and we will take care of the rest. Prompt delivery assured.


Supplement Facts

Serving Size 1 tablet

Servings Per Container 100

Amount Per Serving

L-tyrosine 500 mg

Calcium 157 mg

Other ingredients: dibasic calcium phosphate, sorbitol, stearic acid, colloidal dioxide, magnesium stearate, modified cellulose gum.

This product contains NO sugar, yeast, wheat, gluten, corn, soy or dairy. Contains NO artificial color, sweeteners, flavors or preservatives.

Dosage and Use

  • Suggested dose is 500 to 1000 mg in the morning or afternoon.
  • More may be necessary for depression or pain.
  • These products are best utilized when taken on an empty stomach mixed with juice or water.
  • Adequate cofactors (vitamins B6 and C) should also be taken if not included with the product.


Cancer patients should avoid taking L-phenylalanine and L-tyrosine. Certain cancers, such as melanoma, depend on these amino acids to fuel their growth. Supplemental use of L-phenylalanine and L-tyrosine may raise or normalize blood pressure. Insomnia may occur from over-stimulation if taken too close to bedtime. Individuals with the rare metabolic disorder phenylketonuria should avoid phenylalanine. Those suffering from migraine headaches should also avoid L-phenylalanine and L-tyrosine because they form tyramine, a substance that may trigger migraines.

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